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CVE PROGRAM SOURCE RECORDUnscored

CVE-2026-64454

usb: dwc3: run gadget disconnect from sleepable suspend context

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: usb: dwc3: run gadget disconnect from sleepable suspend context dwc3_gadget_suspend() takes dwc->lock with IRQs disabled and then calls dwc3_disconnect_gadget(). For async callbacks that helper only uses plain spin_unlock()/spin_lock(), so the gadget ->disconnect() callback still runs with IRQs disabled and any sleepable callback trips Lockdep. This issue was found by our static analysis tool and then manually reviewed against the current tree. The grounded PoC kept the dwc3_gadget_suspend() -> dwc3_disconnect_gadget() -> gadget_driver->disconnect() chain, and Lockdep reported: BUG: sleeping function called from invalid context gadget_disconnect+0x21/0x39 [vuln_msv] dwc3_gadget_suspend.constprop.0+0x2b/0x42 [vuln_msv] Keep the disconnect callback selection in one common helper, but add a sleepable suspend-side wrapper which snapshots the callback under dwc->lock and then runs it after spin_unlock_irqrestore(). The regular event path still uses the existing spin_unlock()/spin_lock() window.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 20351ddb1f41cfb3ae20e105425ef43a28393d76 to < b399be2958456efe1b64b19c55a54a24e9035769affected
  • ad43004fd5326bec4466ecc8a07fe0e570b553ca to < 48958478cb8dbc429a5b19f36e866b63d6297d1daffected
  • c8540870af4ce6ddeb27a7bb5498b75fb29b643c to < 5e5798880eb1533a7de6fb68eb14b2d8202ebf76affected
  • c8540870af4ce6ddeb27a7bb5498b75fb29b643c to < e0e4f15d4225fb7156cc0e3c21eb8953114f9b89affected
  • c8540870af4ce6ddeb27a7bb5498b75fb29b643c to < c4e232bd07fe2b69a6e5c380db41dd36b95e0524affected
  • c8540870af4ce6ddeb27a7bb5498b75fb29b643c to < 642e04f5c292d04070ae6e4374fbf14cc40a2465affected
  • c8540870af4ce6ddeb27a7bb5498b75fb29b643c to < 010382937fb69892b3469ac4d30af072262f59e8affected
  • 06684c72b6b153dc434bb6ccebbb49f4cd812b5eaffected
  • 5.15.128 to < 5.15.212affected
  • 6.1.30 to < 6.1.178affected
  • 6.3.4 to < 6.4affected

Linux Linux

Default version status: affected

  • 6.4affected
  • 0 to < 6.4unaffected
  • 5.15.212 to ≤ 5.15.*unaffected
  • 6.1.178 to ≤ 6.1.*unaffected
  • 6.6.145 to ≤ 6.6.*unaffected
  • 6.12.96 to ≤ 6.12.*unaffected
  • 6.18.39 to ≤ 6.18.*unaffected
  • 7.1.4 to ≤ 7.1.*unaffected
  • 7.2 to ≤ *unaffected

References